error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:34:5 | LL | *(u.p) = 13; | ^^^^^^^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:47:6 | LL | *u3.a = T::default(); | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:53:6 | LL | *u3.a = T::default(); | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:61:13 | LL | let a = u1.a; | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:64:14 | LL | let U1 { a } = u1; | ^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:65:12 | LL | if let U1 { a: 12 } = u1 {} | ^^^^^^^^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:66:12 | LL | if let Some(U1 { a: 13 }) = Some(u1) {} | ^^^^^^^^^^^^^^^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:71:6 | LL | *u2.a = String::from("new"); | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:75:6 | LL | *u3.a = 1; | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error[E0133]: access to union field is unsafe and requires unsafe function or block --> $DIR/union-unsafe.rs:79:6 | LL | *u3.a = String::from("new"); | ^^^^ access to union field | = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior error: aborting due to 10 previous errors For more information about this error, try `rustc --explain E0133`.